Evaluation of coverage area for a wide line-of-sight indoor optical free-space communication system employing coherent detection

M Jafar; D C O'Brien; C J Stevens; D J Edwards

doi:10.1049/iet-com:20060225

Evaluation of coverage area for a wide line-of-sight indoor optical free-space communication system employing coherent detection

M Jafar, D C O'Brien, C J Stevens, D J Edwards

Department for Health

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18 Citations (SciVal)

Abstract

The application of coherent detection to indoor optical free-space communications is considered here. Analytical expressions are derived for a wide line-of-sight (W-LOS) optical link which determine the coverage area and the required photo-detection area given different binary digital transmission schemes and a given bit rate. The coverage area is maximised for systems using both metal-semiconductor-metal (NISM) and PIN photo-detectors. Results show that MSM photo-detectors, due to their inherently lower capacitance per unit photo-detection area, result in a greater coverage area than their PIN counterparts. To demonstrate the viability of implementing coherent detection indoors, a 200 Mb/s LOS optical link which uses coherent detection is also reported.

Original language	English
Pages (from-to)	18-26
Number of pages	9
Journal	IET Communications
Volume	2
Issue number	1
DOIs	https://doi.org/10.1049/iet-com:20060225
Publication status	Published - 2008

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ID number: ISI:000253427400004

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title = "Evaluation of coverage area for a wide line-of-sight indoor optical free-space communication system employing coherent detection",

abstract = "The application of coherent detection to indoor optical free-space communications is considered here. Analytical expressions are derived for a wide line-of-sight (W-LOS) optical link which determine the coverage area and the required photo-detection area given different binary digital transmission schemes and a given bit rate. The coverage area is maximised for systems using both metal-semiconductor-metal (NISM) and PIN photo-detectors. Results show that MSM photo-detectors, due to their inherently lower capacitance per unit photo-detection area, result in a greater coverage area than their PIN counterparts. To demonstrate the viability of implementing coherent detection indoors, a 200 Mb/s LOS optical link which uses coherent detection is also reported.",

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AU - O'Brien, D C

AU - Stevens, C J

AU - Edwards, D J

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AB - The application of coherent detection to indoor optical free-space communications is considered here. Analytical expressions are derived for a wide line-of-sight (W-LOS) optical link which determine the coverage area and the required photo-detection area given different binary digital transmission schemes and a given bit rate. The coverage area is maximised for systems using both metal-semiconductor-metal (NISM) and PIN photo-detectors. Results show that MSM photo-detectors, due to their inherently lower capacitance per unit photo-detection area, result in a greater coverage area than their PIN counterparts. To demonstrate the viability of implementing coherent detection indoors, a 200 Mb/s LOS optical link which uses coherent detection is also reported.

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JO - IET Communications

JF - IET Communications

IS - 1

ER -

Evaluation of coverage area for a wide line-of-sight indoor optical free-space communication system employing coherent detection

Abstract

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